Export using compressor. Choose "dvd best quality 90 minutes 16:9" dbl click on the mpeg 2 section that comes up ... depending on how long the film is, you can up the bit rate to 7.6 average and 9.0 maximum. Then look at "rate" under "video format" and make sure it's 23.98.
DCCowan, your dvd player will add pulldown to conform to the ntsc stream, so it can be viewed on a television. Or if it's a progressive television, it will leave it alone and display the 24 frames.